IP Library Assignment 008592/0390
Patent Assignment
Reel/Frame 008592/0390

Assignment of Assignor's Interest

Recorded: 1997-07-07 Pages: 3
Assignors
HAYES, JOHN E.
Executed: 1997-05-27
LANGSDORF, LEAH J.
Executed: 1997-05-27
ISAACS, BRUCE H.
Executed: 1997-05-27
ARMELLINI, FRED J.
Executed: 1997-05-27
Assignee
ARCO CHEMICAL TECHNOLOGY, L.P.
TWO GREENVILLE CROSSING, 4001 KENNETT PIKE, SUITE 238, GREENVILLE, DELAWARE, 19807
Covered Property (1)
Process for Rapid Activation of Double Metal Cyanide Catalysts
Patent: 5,844,070 →
Application: 08/857,998 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Mar 17, 2016
From: ARCO CHEMICAL TECHNOLOGY L.P.
To: BAYER ANTWERP N.V.
Reel/Frame 038008/0427 →
Assignment of Assignor's Interest Mar 24, 2016
From: BAYER ANTWERP N.V.
To: COVESTRO N.V.
Reel/Frame 038091/0582 →